1. The meeting _______ (start) at 8:30 am and _______ (finish) at 3:30 p.m.
2. We _______ (have) pizza for dinner tonight .
3. They _______ (see) many different kinds of birds at Beijing Wildlife Park yesterday.
4. If more and more wetlands _______ (disappear), there _______ (be) less and less space for plants,
    animals and birds.
5 ._______ (not drop) litter carelessly.
6. Mr. Green _______ (not go) home until he finished his work.
7. Mother told me _______ (wash) the clothes at home.
8. It's important for the students _______ (write) carefully and clearly.
9. Listen! How beautifully the girls _______ (sing)!
10.               you              (go) to visit your grandfather next week?

1. I              (will / would) bring drinks to the party tonight.
2. While you              (watched / were watching) TV, I was doing my homework.
3. I don't have enough money. Maybe I              (should / shouldn't) get a part-time job.
4. I think there will be              (fewer /less) pollution in ten years.
5.              (How many / How much) cheese do we need for the pizza?
6. If you don't go to Lisa's party, you'll              (sorry / be sorry).
7. We              (was having / were having) our dinner when the policeman came.
8. My math teacher              (say / said) I was too lazy.
9. You should              (wear / wearing) your cool T-shirt for the party.
10. Do you think my jeans              (is / are) out of style?